heart start defibrillator

accident aed aid arrest arrhythmia artificial attack automated battery cardiac cardiology cardiovascular care danger death defibrillator device dying electrical electrodes electronic emergency equipment external fibrillation health heart heartbeat help helpful hospital ill industry life medic medical medicine monitor nursing pacemaker paramedics power pulse rescue rescuer respond resuscitate resuscitation revive rhythms safety save saver saving shock sick supra tachycardia urgent ventricular